The present values of the ellipticity of the Earth’s orbit and the obliquity of its rotation axis lead to changes of orbital velocity (Summer in the southern hemisphere at perihelion and Summer in the northern hemisphere at aphelion). The torque changes as this velocity changes. As discussed in [1]}, [2]}, forces acting on the polar axis do so through the torque (\(m_1\) , \(m_2\) ) obeying the Liouville-Euler system of equations. The influence of this torque is in quadrature with the length of day (lod). Annual variations in lod are in opposition to changes in the Sun-Earth distance (Figure 8a, bottom). The pressure anomalies due to the variation in rotation velocity (tracked through lod changes and winds). The phase difference between the annual components of lod and SLP is constant at 32 \(\pm \)  1.2 days (Figure 8b). Relative variations of amplitudes should be similar and indeed they are (Figure 8b).
